/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String regex = "[0-9, /,]+";
 
	// Negative test cases, should all be "false"
	System.out.println("1234,234,345a".matches(regex));
 
	// positive test cases, should all be "true"
	System.out.println("1234,234,34".matches(regex));
	}
}

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